5

5

4

4

3

3

2

2

1

1

D D

C C

B B

A A

VCC

C2 Colum 1C2 Colum 2C2 Colum 3C2 Colum 4C2 Colum 5C2 Colum 6C2 Colum 7C2 Colum 8

VDD

GND

GND

L2 C1

L2 C2

GND

GND

L2 C3

L2 C4

GND

GND

L2 C5 GND

L2 C6 GND

L2 C7

L2 C8

C2 Colum 1 C2 Colum 3 C2 Colum 5 C2 Colum 7

C2 Colum 2 C2 Colum 4 C2 Colum 6 C2 Colum 8

GNDGND

XTAL1XTAL2

VCC

RSTVCC

Row 7

XTAL

2

GND

GND

L3 C1

L3 C2

GND

GND

L3 C3

L3 C4

GND

GND

L3 C5 GND

L3 C6 GND

L3 C7

Row 8

L3 C8

C3 Colum 1 C3 Colum 3 C3 Colum 5 C3 Colum 7

C3 Colum 2 C3 Colum 4 C3 Colum 6 C3 Colum 8

A11

P3.4

P3.3

Se L 2

Se L 1

Se L 3

P3.0

C Row 1C Row 2C Row 3C Row 4C Row 5C Row 6C Row 7C Row 8

P3.1P3.2

AD3

AD0AD1AD2

P3.0P3.1P3.2

P3.0P3.1P3.2

A8A9A10

AD7

AD4AD5AD6

A12

C3 Colum 1C3 Colum 2C3 Colum 3C3 Colum 4C3 Colum 5C3 Colum 6C3 Colum 7C3 Colum 8

GND

GND

L1 C1

L1 C2

GND

GND

L1 C3

L1 C4

GND

GND

L1 C5 GND

L1 C6 GND

L1 C7

VDD

Row 1Row 2Row 3Row 4Row 5

L1 C8

Row 6Row 7Row 8

WR

C1 Colum 1

VDD

C1 Colum 3

L1 C1L1 C2L1 C3L1 C4L1 C5L1 C6L1 C7L1 C8

C1 Colum 5

VDD

RD

C1 Colum 7

C1 Colum 2

VDD

C1 Colum 4 C1 Colum 6 C1 Colum 8

VDD

Row 1Row 2Row 3Row 4

RST

Row 5Row 6Row 7Row 8

VDD

Se L 1

VDD

L2 C1L2 C2L2 C3L2 C4L2 C5L2 C6L2 C7L2 C8

VDD

Se L 2

A13VCC

A0A1A2

AD0AD1AD2AD3AD4AD5AD6

A3A4A5A6A7A8A9A10A11A12

Row 1

AD7

Se L 3

Row 1Row 2Row 3Row 4Row 5Row 6Row 7Row 8

RDWR

Row 2

L3 C1L3 C2L3 C3L3 C4L3 C5L3 C6L3 C7L3 C8

P3.0

Row 3

VCC

VCC

Row 4

VCC

P3.4

P3.1P3.2P3.3

Row 5

Row 6

C1 Colum 1

C Row 1

A13

C1 Colum 2C1 Colum 3

C Row 3

C1 Colum 4

C Row 5

C1 Colum 5C1 Colum 6C1 Colum 7C1 Colum 8

C Row 7

C Row 8

ALE

AD0AD1AD2AD3AD4AD5AD6AD7

ALEGND

A0A1A2A3A4A5A6A7

C Row 6

XTAL

1

GND

C Row 4C Row 2

C Row 1

VDD

Row 1

GND

C Row 2

VDD

Row 2

GND

C Row 3

VDD

Row 3

GND

C Row 4

VDD

Row 4

GND

C Row 5

VDD

Row 5

GND

C Row 6

VDD

Row 6

GND

C Row 7

VDD

Row 7

GND

C Row 8

VDD

Row 8

GND

AD2

AD6

VCC

AD1

AD3

AD5

AD7

AD0

AD4

VCC

GND

VCC

Title

Size Document Number Rev

Date: Sheet of

<Doc> <RevCode>

<Title>

A3

1 1Friday, December 22, 2006

Title

Size Document Number Rev

Date: Sheet of

<Doc> <RevCode>

<Title>

A3

1 1Friday, December 22, 2006

Title

Size Document Number Rev

Date: Sheet of

<Doc> <RevCode>

<Title>

A3

1 1Friday, December 22, 2006

RAM

Q4C828Q4C828

SW2

SW PUSHBUTTON

SW2

SW PUSHBUTTON

12 11

13 U24D

74LS125

U24D

74LS125

5 6

4 U28B

74LS125

U28B

74LS125

Q2C828Q2C828

12 11

13 U22D

74LS125

U22D

74LS125

Y2

12Mhz

Y2

12Mhz

R1110kR1110k

R1510kR1510k

12 11

13 U30D

74LS126

U30D

74LS126

3 4

U26B

74HC04

U26B

74HC04

12 11

13 U29D

74LS125

U29D

74LS125

A1B2C3

Y0 15Y1 14Y2 13Y3 12Y4 11Y5 10Y6 9Y7 7

G16G2A4G2B5

U19

74LS138

U19

74LS138

9 8

10 U25C

74LS125

U25C

74LS125

Q1C828Q1C828

R510kR510k

Q5C828Q5C828

R710kR710k

5 6

4 U31B

74LS126

U31B

74LS126

R310kR310k

C2433pC2433p

A010A19A28A37A46A55A64A73A825A924A1021A1123A122

D0 11D1 12D2 13D3 15D4 16D5 17D6 18D7 19

OE22WE27CS120CS226

U20

6264

U20

6264

R12

k100

R12

k100

R16

k100

R16

k100

D3LEDD3LED

2 3

1 U25A

74LS125

U25A

74LS125

123

J2

Power

J2

Power

9 8

10 U28C

74LS125

U28C

74LS125

R174.7kR174.7k

2 3

1 U23A

74LS125

U23A

74LS125

R6

k100

R6

k100

5 6

4 U30B

74LS126

U30B

74LS126

R910kR910k

1

23

U27A

74HC32

U27A

74HC32

R8

k100

R8

k100

12 11

13 U25D

74LS125

U25D

74LS125

123456789

RN1

4.7K

RN1

4.7K

R4

k100

R4

k100

2 3

1 U24A

74LS125

U24A

74LS125

C25

33p

C25

33p

2 3

1 U22A

74LS125

U22A

74LS125

Q7C828Q7C828

R210kR210k

R10

k100

R10

k100

2 3

1 U31A

74LS126

U31A

74LS126

12 11

13 U28D

74LS125

U28D

74LS125

5 6

4 U23B

74LS125

U23B

74LS125

D02D13D24D35D46D57D68D79

LE11OE1

Q0 19Q1 18Q2 17Q3 16Q4 15Q5 14Q6 13Q7 12

U34

74HC573

U34

74HC573

12345678

910111213141516

Dot led 8x8 6

Led 3

Dot led 8x8 6

Led 3

4

56

U27B

74HC32

U27B

74HC32

R010KR010K

5 64 U24B

74LS125

U24B

74LS125

R1310kR1310k

5 6

4 U22B

74LS125

U22B

74LS125

2 3

1 U30A

74LS126

U30A

74LS126

PSEN 29ALE 30

VCC40

EA31

X119X218

RST9

P0.0/AD039P0.1/AD138P0.2/AD237P0.3/AD336P0.4/AD435P0.5/AD534P0.6/AD633P0.7/AD732

P1.01P1.12P1.23P1.34P1.45P1.56P1.67P1.78

P2.0/A8 21P2.1/A9 22

P2.2/A10 23P2.3/A11 24P2.4/A12 25P2.5/A13 26P2.6/A14 27P2.7/A15 28

P3.0/RXD 10P3.1/TXD 11P3.2/INT0 12P3.3/INT1 13

P3.4/T0 14P3.5/T1 15

P3.6/WR 16P3.7/RD 17

U16

8051

U16

8051

D21N4007D21N4007

12345678

910111213141516

Dot led 8x8 5

Led 2

Dot led 8x8 5

Led 2

A1B2C3

Y0 15Y1 14Y2 13Y3 12Y4 11Y5 10Y6 9Y7 7

G16G2A4G2B5

U17

74LS138

U17

74LS138

R1

k100

R1

k100

2 3

1 U29A

74LS125

U29A

74LS125

9 8

10 U23C

74LS125

U23C

74LS125

12 11

13 U31D

74LS126

U31D

74LS126

9

108

U27C

74HC32

U27C

74HC32

9 8

10 U30C

74LS126

U30C

74LS126

R14

k100

R14

k100

2 3

1 U28A

74LS125

U28A

74LS125

9 8

10 U24C

74LS125

U24C

74LS125

9 8

10 U22C

74LS125

U22C

74LS125

9 8

10 U29C

74LS125

U29C

74LS125

1 2

U26A

74HC04

U26A

74HC04

5 6

4 U25B

74LS125

U25B

74LS125

Q6C828Q6C828

Q8C828Q8C828

12345678

910111213141516

Dot led 8x8 4

Led 1

Dot led 8x8 4

Led 1

C2

10uF 16V

C2

10uF 16V

5 6

4 U29B

74LS125

U29B

74LS125

12 11

13 U23D

74LS125

U23D

74LS125

A1B2C3

Y0 15Y1 14Y2 13Y3 12Y4 11Y5 10Y6 9Y7 7

G16G2A4G2B5

U18

74LS138

U18

74LS138

9 8

10 U31C

74LS126

U31C

74LS126

Q3C828Q3C828